From: Daniel Brumbaugh Keeney <devi.webmaster@...>
Date: 2008-06-14T08:20:58+09:00
Subject: Re: raise and rescue

On Fri, Jun 13, 2008 at 5:34 PM, Michael W. Ryder
<_mwryder@worldnet.att.net> wrote:
> So how would you do something that requires user intervention, say in
> putting more paper in a printer?

def foo
    do_something
    ensure_printer
    do_more
end
def ensure_printer
    return true if printer_available?
    if confirm 'you're printer has no paper. Try again?'
        ensure_printer
    else
        raise NoPaperError
    end
end

That's how I would imagine your problem to look. If there isn't paper,
then it asks the user whether to try again, otherwise, it throws a
NoPaperError which gets handled somewhere.

Daniel Brumbaugh Keeney